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Posted to commits@airflow.apache.org by GitBox <gi...@apache.org> on 2021/06/28 14:30:23 UTC
[GitHub] [airflow] IanDoarn opened a new issue #16694: Scheduled DagRuns skip next scheduled run if start_date = days_ago(1) and previous day is not a scheduled run
IanDoarn opened a new issue #16694:
URL: https://github.com/apache/airflow/issues/16694
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**Apache Airflow version**: 2.0.1
**Kubernetes version (if you are using kubernetes)** (use `kubectl version`):
```
Client Version: version.Info{Major:"1", Minor:"11+", GitVersion:"v1.11.0+d4cacc0", GitCommit:"d4cacc0", GitTreeState:"clean", BuildDate:"2018-10-10T16:38:01Z", GoVersion:"go1.10.3", Compiler:"gc", Platform:"darwin/amd64"}
Server Version: version.Info{Major:"1", Minor:"18", GitVersion:"v1.18.16", GitCommit:"7a98bb2b7c9112935387825f2fce1b7d40b76236", GitTreeState:"clean", BuildDate:"2021-02-17T11:52:32Z", GoVersion:"go1.13.15", Compiler:"gc", Platform:"linux/amd64"}
```
**Environment**: Kubernetes
Cloud provider or hardware configuration: Cloud
OS (e.g. from /etc/os-release): Docker debian
Kernel (e.g. uname -a):
Install tools:
Others: Docker python:3.8-buster, deployed to internal k8s clusters
**What happened**:
DagRuns skip next scheduled run if start_date = days_ago(1)
related issue https://github.com/apache/airflow/issues/16667
**What you expected to happen**:
If a dag has a cron schedule for a specific day, lets say Monday 9am CST, the dag should trigger a run
<!-- What do you think went wrong? -->
if start_date = days_ago(1) and the previous day was not a scheduled run, the scheduled run is either skipped OR marked as complete and all tasks are blank.
**How to reproduce it**:
Create simple dag like the below. Make sure it is enabled and the cron is set so the previous day is not a scheduled run.
When the dag is scheduled it is skipped.
```python
default_args = {
'owner': 'iandoarn',
'email': ['foobar@baz.com'],
'start_date': days_ago(1),
'retries': 0
}
with DAG(
dag_id=f"DUMMY_DAG",
default_args=default_args,
catchup=False,
max_active_runs=1,
schedule_interval='30 1 * * 2-6',
tags=[CONFIG['client_name'].lower()],
) as dag:
dag.doc_md = __doc__
start_task = BashOperator(
task_id="start_task",
bash_command="echo start",
)
end_task = BashOperator(
task_id="end_task",
bash_command="echo end",
)
start_task >> end_task
```
**Anything else we need to know**:
For my use case, this happens every time on mondays CST for these cron schedules (our airflow instance is in UTC time)
0 14 * * 1-4
30 1 * * 2-6
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[GitHub] [airflow] eladkal commented on issue #16694: Scheduled DagRuns skip next scheduled run if start_date = days_ago(1) and previous day is not a scheduled run
Posted by GitBox <gi...@apache.org>.
eladkal commented on issue #16694:
URL: https://github.com/apache/airflow/issues/16694#issuecomment-889076492
>What happened:
DagRuns skip next scheduled run if start_date = days_ago(1)
Do not use [dynamic value for start_date](https://airflow.apache.org/docs/apache-airflow/stable/faq.html#what-s-the-deal-with-start-date). If the issue is present when using static `start_date` please comment and explain what is the bug.
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[GitHub] [airflow] eladkal closed issue #16694: Scheduled DagRuns skip next scheduled run if start_date = days_ago(1) and previous day is not a scheduled run
Posted by GitBox <gi...@apache.org>.
eladkal closed issue #16694:
URL: https://github.com/apache/airflow/issues/16694
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